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Loan Servicing, Mortgage Origination, and Loans Held for Sale (Tables) | 3 Months Ended
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Mar. 31, 2022
Loan Servicing, Mortgage Origination, and Loans Held for Sale |
Summary of changes in the fair value of MSRs and its offsetting hedge | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended |
(Dollars in thousands) |  | March 31, 2022 |  | March 31, 2021 |
Increase in fair value of MSRs | ​ | $ | 12,827 | ​ | $ | 8,076 | ​
Decay of MSRs | ​ |  | (2,230) | ​ |  | (4,561) | ​
Loss related to derivatives | ​ | ​ | (11,838) | ​ | ​ | (6,404) | ​
Net effect on statements of income | ​ | $ | (1,241) | ​ | $ | (2,889) | ​
Schedule of characteristics and sensitivity analysis of the MSR | The characteristics and sensitivity analysis of the MSRs are included in the following table.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | ​ | December 31, | ​ | ​
(Dollars in thousands) |  | 2022 |  |  | 2021 |  |
Composition of residential loans serviced for others | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Fixed-rate mortgage loans | ​ | ​ | 100.0 | % | ​ | ​ | 99.9 | % | ​
Adjustable-rate mortgage loans | ​ | ​ | — | % | ​ | ​ | 0.1 | % | ​
Total | ​ | ​ | 100.0 | % | ​ | ​ | 100.0 | % | ​
Weighted average life | ​ | ​ | 8.42 | years | ​ | ​ | 7.35 | years | ​
Constant Prepayment rate (CPR) | ​ | ​ | 6.5 | % | ​ | ​ | 8.4 | % | ​
Weighted average discount rate | ​ | ​ | 9.4 | % | ​ | ​ | 9.0 | % | ​
Effect on fair value due to change in interest rates | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
25 basis point increase | ​ | $ | 1,337 | ​ | ​ | $ | 3,961 | ​ | ​
50 basis point increase | ​ | ​ | 2,316 | ​ | ​ | ​ | 7,261 | ​ | ​
25 basis point decrease | ​ | ​ | (1,934) | ​ | ​ | ​ | (4,371) | ​ | ​
50 basis point decrease | ​ | ​ | (4,793) | ​ | ​ | ​ | (8,966) | ​ | ​

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- Definition Tabular disclosure of changes in the fair value of Mortgage Servicing Rights (MSRs) and its offsetting hedge. + References No definition available. + Details
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- Definition Tabular disclosure related to composition of residential mortgages serviced for others, characteristics and sensitivity analysis of the mortgage servicing rights. + References No definition available. + Details
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